[FFmpeg-devel] [PATCH]uint16_t -> uint32_t vlc tables
Sun May 13 12:53:08 CEST 2007
On Sun, May 13, 2007 at 12:34:01PM +0200, Denis Fortin wrote:
> Michael Niedermayer a ?crit :
> > Hi
> > On Sat, May 12, 2007 at 05:54:47PM +0200, Denis Fortin wrote:
> >> This patch moves vlc tables from uint16_t to uint32_t.
> >> This is useful for vc1 which uses >16bits vlc codes.
> >> We this patch we don't need tables from vc1acdata.h.
> > rejected, wasting space and reduces speed due to data cache requirements
> Ok. The idea was to reuse msmpeg4 encoding part for vc1 encoding.
> Four tables in vc1acdata.h are duplicated from msmpeg4table.h and
> h263data.h (except that they are uint32_t instead of uint16_t).
> Now there's two other alternatives for me :
> 1. Add specials cases for theses two new tables in msmpeg4.c
> (find_best_tables and ac coding)
> 2. 'fork' msmpeg4.c into vc1enc.c and specialize function for vc1 encoding.
> Which one as more chances to be accepted ?
whats the speed (see START/STOP_TIMER) and object sizes of these 2?
note, i assume that both 1 and 2 is implemented without source level
Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB
No snowflake in an avalanche ever feels responsible. -- Voltaire
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